Selected Variables

base: Code of the patient
covariates:
- Age
- Gender
- Site
- Prior Spine Surgery
- '1st surgeon: experience in ASD surgery'
- ASA classification
- Decompression
- Osteotomy
- 3CO
- SPOs
- BMI_First Visit
- Tobacco use_First Visit
- Osteoporosis / osteopenia
- Levels Previously operated - Lower
- LGap
- RLL
- Number of Interbody Fusions
- 'Posterior Instrumented Fusion: Upper / Lower Levels'
- Alif
- LL-Lordosis Difference
outcomes_ql:
- 2Y. ODI - Score (%)
- 2Y. SRS22 - SRS Subtotal score
- 2Y. SF36 - MCS
- 2Y. SF36 - PCS
outcomes_radiology:
- 6W. Major curve Cobb angle
- 1Y. Major curve Cobb angle
- 6W. T1 Sagittal Tilt
- 1Y. T1 Sagittal Tilt
- 6W. Sagittal Balance
- 1Y. Sagittal Balance
- 6W. Global Tilt
- 1Y. Global Tilt
- 6W. Lordosis (top of L1-S1)
- 1Y. Lordosis (top of L1-S1)
- 6W. LGap
- 1Y. LGap
- 6W. Pelvic Tilt
- 1Y. Pelvic Tilt
predictive:
- Weight (kgs)_First Visit
- Height (cm)_First Visit
- Total surgical time st1+st2+st3
- Osteotomy
- Alcohol/drug abuse
- Anemia or other blood disorders
- Osteoarthritis
- Mild vascular
- Depression / anxiety
- Diabetes with end organ damage
- Cardiac
- Hypertension
- Chronic pulmonary disease
- Nervous system disorders
- Renal
- Peripheral vascular disease
- Psychiatric / Behavioral
- Peptic ulcer
- Bladder incontinence
- Bowel incontinence
- Leg weakness
- Loss of balance
- NRS back - Leg pain - Average
- Tobacco use_First Visit
- Years with spine problems
- ODI - Score (%)_First Visit
- SRS22 - SRS Total score_First Visit
- SF36 - PCS_First Visit
- SF36 - MCS_First Visit
- Major curve Cobb angle
expanded:
- Age
- Gender
- Site
- Prior Spine Surgery
- '1st surgeon: experience in ASD surgery'
- ASA classification
- Decompression
- Osteotomy
- 3CO
- SPOs
- BMI_First Visit
- Tobacco use_First Visit
- Osteoporosis / osteopenia
- Levels Previously operated - Lower
- LGap
- RLL
- Number of Interbody Fusions
- 'Posterior Instrumented Fusion: Upper / Lower Levels'
- Alif
- LL-Lordosis Difference
- Weight (kgs)_First Visit
- Height (cm)_First Visit
- Total surgical time st1+st2+st3
- Alcohol/drug abuse
- Anemia or other blood disorders
- Osteoarthritis
- Mild vascular
- Depression / anxiety
- Diabetes with end organ damage
- Cardiac
- Hypertension
- Chronic pulmonary disease
- Nervous system disorders
- Renal
- Peripheral vascular disease
- Psychiatric / Behavioral
- Peptic ulcer
- Bladder incontinence
- Bowel incontinence
- Leg weakness
- Loss of balance
- NRS back - Leg pain - Average
- Years with spine problems
- ODI - Score (%)_First Visit
- SRS22 - SRS Total score_First Visit
- SF36 - PCS_First Visit
- SF36 - MCS_First Visit
- Major curve Cobb angle
- SRS22 - SRS Subtotal score_First Visit
- T1 Sagittal Tilt
- Sagittal Balance
- Global Tilt
- Lordosis (top of L1-S1)
- Pelvic Tilt

Age

Proportion of na: 0%

Gender

Proportion of na: 0%
Female Male
No 342 91
Yes 51 18

Site

Proportion of na: 0%
ANK Op BCN Op BOR Op IST Op MAD Op ZUR Op
No 12 71 168 20 34 128
Yes 0 32 16 10 10 1

Prior Spine Surgery

Proportion of na: 0.1%
NA No Yes
No 1 274 158
Yes 0 35 34

1st surgeon: experience in ASD surgery

Proportion of na: 0%
2-10 years More than 10 years
No 109 324
Yes 7 62

ASA classification

Proportion of na: 0.5%

Decompression

Proportion of na: 0%
No Yes
No 240 193
Yes 44 25

Osteotomy

Proportion of na: 0%
No Yes
No 209 224
Yes 26 43

3CO

Proportion of na: 0%
No Yes
No 382 51
Yes 53 16

SPOs

Proportion of na: 0%

BMI_First Visit

Proportion of na: 1.7%

Tobacco use_First Visit

Proportion of na: 2.5%
Current Ex-User NA Non-User
No 74 84 11 264
Yes 12 15 2 40

Osteoporosis / osteopenia

Proportion of na: 0%
No Yes
No 340 93
Yes 60 9

Levels Previously operated - Lower

Proportion of na: 63.1%
C Iliac L NA S T
No 6 8 91 279 43 6
Yes 1 5 16 38 8 1

LGap

Proportion of na: 2.7%

RLL

Proportion of na: 2.7%

Number of Interbody Fusions

Proportion of na: 0%

Posterior Instrumented Fusion: Upper / Lower Levels

Proportion of na: 1.1%
L L-Iliac L-S NA S-Iliac T T-Iliac T-L T-S
No 82 53 62 0 0 4 171 46 15
Yes 2 11 5 6 1 0 34 9 1

LL-Lordosis Difference

Proportion of na: 2.7%

Weight (kgs)_First Visit

Proportion of na: 1.3%

Height (cm)_First Visit

Proportion of na: 1.5%

Total surgical time st1+st2+st3

Proportion of na: 0%

Alcohol/drug abuse

Proportion of na: 0%
No Yes
No 419 14
Yes 67 2

Anemia or other blood disorders

Proportion of na: 0%
No Yes
No 400 33
Yes 58 11

Osteoarthritis

Proportion of na: 0%
No Yes
No 308 125
Yes 59 10

Mild vascular

Proportion of na: 0%
No Yes
No 395 38
Yes 66 3

Depression / anxiety

Proportion of na: 0%
No Yes
No 333 100
Yes 47 22

Diabetes with end organ damage

Proportion of na: 0%
No Yes
No 432 1
Yes 68 1

Cardiac

Proportion of na: 0%
No Yes
No 378 55
Yes 57 12

Hypertension

Proportion of na: 0%
No Yes
No 255 178
Yes 49 20

Chronic pulmonary disease

Proportion of na: 0%
No Yes
No 385 48
Yes 58 11

Nervous system disorders

Proportion of na: 0%
No Yes
No 406 27
Yes 63 6

Renal

Proportion of na: 0%
No Yes
No 396 37
Yes 63 6

Peripheral vascular disease

Proportion of na: 0%
No Yes
No 416 17
Yes 65 4

Psychiatric / Behavioral

Proportion of na: 0%
No Yes
No 416 17
Yes 69 0

Peptic ulcer

Proportion of na: 0%
No Yes
No 430 3
Yes 69 0

Bladder incontinence

Proportion of na: 6.9%
NA No Yes
No 28 365 40
Yes 7 50 12

Bowel incontinence

Proportion of na: 6.9%
NA No Yes
No 28 364 41
Yes 7 55 7

Leg weakness

Proportion of na: 5.9%
NA No Yes
No 24 183 226
Yes 6 19 44

Loss of balance

Proportion of na: 6.3%
NA No Yes
No 26 209 198
Yes 6 22 41

NRS back - Leg pain - Average

Proportion of na: 4.7%

Years with spine problems

Proportion of na: 7.5%
1-2 years 2-5 years 5-10 years Greater than 10 years Less than 1 year less than 1yr NA
No 24 48 54 271 4 2 30
Yes 3 3 9 46 0 0 8

ODI - Score (%)_First Visit

Proportion of na: 3.5%

SRS22 - SRS Total score_First Visit

Proportion of na: 3.3%

SF36 - PCS_First Visit

Proportion of na: 5.7%

SF36 - MCS_First Visit

Proportion of na: 5.7%

Major curve Cobb angle

Proportion of na: 4.7%

SRS22 - SRS Subtotal score_First Visit

Proportion of na: 3.3%

T1 Sagittal Tilt

Proportion of na: 9.1%

Sagittal Balance

Proportion of na: 5.7%

Global Tilt

Proportion of na: 3.9%

Lordosis (top of L1-S1)

Proportion of na: 2.1%

Pelvic Tilt

Proportion of na: 2.5%

Propensity Scores Common Support

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##     melanoma

Model Stats

  • Treatment proportion: 0.137
  • Model Type: elastic_net
  • Accuracy: 0.9155439
  • Params: alpha: 0.9625 lambda: 0.0050237

Model Coefficients

Bootstraping replicas: 50

Visual Inspection

## `geom_smooth()` using formula 'y ~ x'

## `geom_smooth()` using formula 'y ~ x'

## `geom_smooth()` using formula 'y ~ x'

## `geom_smooth()` using formula 'y ~ x'

## `geom_smooth()` using formula 'y ~ x'

## `geom_smooth()` using formula 'y ~ x'

## `geom_smooth()` using formula 'y ~ x'

## `geom_smooth()` using formula 'y ~ x'